loop6: detected capacity change from 0 to 32768 ocfs2: Mounting device (7,6) on (node local, slot 0) with ordered data mode. ====================================================== WARNING: possible circular locking dependency detected syzkaller #0 Not tainted ------------------------------------------------------ syz.6.122/7187 is trying to acquire lock: ffff8880362ac778 (sb_internal#3){.+.+}-{0:0}, at: ocfs2_setattr+0x969/0x1b40 fs/ocfs2/file.c:1263 but task is already holding lock: ffff88803ab3dcd0 (&ocfs2_file_ip_alloc_sem_key){++++}-{4:4}, at: ocfs2_setattr+0x95a/0x1b40 fs/ocfs2/file.c:1262 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #4 (&ocfs2_file_ip_alloc_sem_key){++++}-{4:4}: lock_acquire+0x120/0x360 kernel/locking/lockdep.c:5868 down_write+0x3a/0x50 kernel/locking/rwsem.c:1590 ocfs2_try_remove_refcount_tree+0xb6/0x320 fs/ocfs2/refcounttree.c:932 ocfs2_xattr_set+0x595/0x11f0 fs/ocfs2/xattr.c:3669 ocfs2_set_acl+0x701/0x7b0 fs/ocfs2/acl.c:254 ocfs2_iop_set_acl+0x1aa/0x2a0 fs/ocfs2/acl.c:286 set_posix_acl fs/posix_acl.c:954 [inline] vfs_remove_acl+0x495/0x700 fs/posix_acl.c:1241 ovl_do_remove_acl fs/overlayfs/overlayfs.h:355 [inline] ovl_workdir_create+0x594/0x8b0 fs/overlayfs/super.c:354 ovl_make_workdir fs/overlayfs/super.c:669 [inline] ovl_get_workdir+0x32f/0x17c0 fs/overlayfs/super.c:827 ovl_fill_super+0x1365/0x35b0 fs/overlayfs/super.c:1406 vfs_get_super fs/super.c:1325 [inline] get_tree_nodev+0xbb/0x150 fs/super.c:1344 vfs_get_tree+0x92/0x2b0 fs/super.c:1815 do_new_mount+0x2a2/0x9e0 fs/namespace.c:3808 do_mount fs/namespace.c:4136 [inline] __do_sys_mount fs/namespace.c:4347 [inline] __se_sys_mount+0x317/0x410 fs/namespace.c:4324 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f -> #3 (&oi->ip_xattr_sem){++++}-{4:4}: lock_acquire+0x120/0x360 kernel/locking/lockdep.c:5868 down_write+0x3a/0x50 kernel/locking/rwsem.c:1590 ocfs2_xattr_set_handle+0x3b0/0x7a0 fs/ocfs2/xattr.c:3501 ocfs2_init_security_set+0xbd/0xe0 fs/ocfs2/xattr.c:7307 ocfs2_mknod+0x137f/0x2050 fs/ocfs2/namei.c:422 ocfs2_mkdir+0x191/0x440 fs/ocfs2/namei.c:659 vfs_mkdir+0x306/0x510 fs/namei.c:4366 do_mkdirat+0x247/0x590 fs/namei.c:4399 __do_sys_mkdirat fs/namei.c:4416 [inline] __se_sys_mkdirat fs/namei.c:4414 [inline] __x64_sys_mkdirat+0x87/0xa0 fs/namei.c:4414 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f -> #2 (jbd2_handle){++++}-{0:0}: lock_acquire+0x120/0x360 kernel/locking/lockdep.c:5868 start_this_handle+0x1fa7/0x21c0 fs/jbd2/transaction.c:444 jbd2__journal_start+0x2c1/0x5b0 fs/jbd2/transaction.c:501 jbd2_journal_start+0x2a/0x40 fs/jbd2/transaction.c:540 ocfs2_start_trans+0x377/0x6d0 fs/ocfs2/journal.c:374 ocfs2_fileattr_set+0x301/0x7e0 fs/ocfs2/ioctl.c:119 vfs_fileattr_set+0x932/0xb90 fs/file_attr.c:298 ioctl_fssetxattr+0x1ed/0x270 fs/file_attr.c:372 do_vfs_ioctl+0x820/0x1440 fs/ioctl.c:567 __do_sys_ioctl fs/ioctl.c:596 [inline] __se_sys_ioctl+0x82/0x170 fs/ioctl.c:584 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f -> #1 (&journal->j_trans_barrier){.+.+}-{4:4}: lock_acquire+0x120/0x360 kernel/locking/lockdep.c:5868 down_read+0x97/0x1f0 kernel/locking/rwsem.c:1537 ocfs2_start_trans+0x36b/0x6d0 fs/ocfs2/journal.c:372 ocfs2_fileattr_set+0x301/0x7e0 fs/ocfs2/ioctl.c:119 vfs_fileattr_set+0x932/0xb90 fs/file_attr.c:298 ioctl_fssetxattr+0x1ed/0x270 fs/file_attr.c:372 do_vfs_ioctl+0x820/0x1440 fs/ioctl.c:567 __do_sys_ioctl fs/ioctl.c:596 [inline] __se_sys_ioctl+0x82/0x170 fs/ioctl.c:584 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f -> #0 (sb_internal#3){.+.+}-{0:0}: check_prev_add kernel/locking/lockdep.c:3165 [inline] check_prevs_add kernel/locking/lockdep.c:3284 [inline] validate_chain+0xb9b/0x2140 kernel/locking/lockdep.c:3908 __lock_acquire+0xab9/0xd20 kernel/locking/lockdep.c:5237 lock_acquire+0x120/0x360 kernel/locking/lockdep.c:5868 percpu_down_read_internal include/linux/percpu-rwsem.h:53 [inline] percpu_down_read_freezable include/linux/percpu-rwsem.h:83 [inline] __sb_start_write include/linux/fs.h:1798 [inline] sb_start_intwrite include/linux/fs.h:1981 [inline] ocfs2_start_trans+0x26b/0x6d0 fs/ocfs2/journal.c:370 ocfs2_setattr+0x969/0x1b40 fs/ocfs2/file.c:1263 notify_change+0xb31/0xe60 fs/attr.c:552 ovl_do_notify_change fs/overlayfs/overlayfs.h:203 [inline] ovl_workdir_create+0x722/0x8b0 fs/overlayfs/super.c:364 ovl_make_workdir fs/overlayfs/super.c:669 [inline] ovl_get_workdir+0x32f/0x17c0 fs/overlayfs/super.c:827 ovl_fill_super+0x1365/0x35b0 fs/overlayfs/super.c:1406 vfs_get_super fs/super.c:1325 [inline] get_tree_nodev+0xbb/0x150 fs/super.c:1344 vfs_get_tree+0x92/0x2b0 fs/super.c:1815 do_new_mount+0x2a2/0x9e0 fs/namespace.c:3808 do_mount fs/namespace.c:4136 [inline] __do_sys_mount fs/namespace.c:4347 [inline] __se_sys_mount+0x317/0x410 fs/namespace.c:4324 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f other info that might help us debug this: Chain exists of: sb_internal#3 --> &oi->ip_xattr_sem --> &ocfs2_file_ip_alloc_sem_key Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&ocfs2_file_ip_alloc_sem_key); lock(&oi->ip_xattr_sem); lock(&ocfs2_file_ip_alloc_sem_key); rlock(sb_internal#3); *** DEADLOCK *** 4 locks held by syz.6.122/7187: #0: ffff88803b0dc0d0 (&type->s_umount_key#81/1){+.+.}-{4:4}, at: alloc_super+0x204/0x990 fs/super.c:345 #1: ffff8880362ac488 (sb_writers#13){.+.+}-{0:0}, at: mnt_want_write+0x41/0x90 fs/namespace.c:557 #2: ffff88803ab3e080 (&sb->s_type->i_mutex_key#34){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:869 [inline] #2: ffff88803ab3e080 (&sb->s_type->i_mutex_key#34){+.+.}-{4:4}, at: ovl_workdir_create+0x6a8/0x8b0 fs/overlayfs/super.c:363 #3: ffff88803ab3dcd0 (&ocfs2_file_ip_alloc_sem_key){++++}-{4:4}, at: ocfs2_setattr+0x95a/0x1b40 fs/ocfs2/file.c:1262 stack backtrace: CPU: 0 UID: 0 PID: 7187 Comm: syz.6.122 Not tainted syzkaller #0 PREEMPT_{RT,(full)} Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025 Call Trace: dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120 print_circular_bug+0x2ee/0x310 kernel/locking/lockdep.c:2043 check_noncircular+0x134/0x160 kernel/locking/lockdep.c:2175 check_prev_add kernel/locking/lockdep.c:3165 [inline] check_prevs_add kernel/locking/lockdep.c:3284 [inline] validate_chain+0xb9b/0x2140 kernel/locking/lockdep.c:3908 __lock_acquire+0xab9/0xd20 kernel/locking/lockdep.c:5237 lock_acquire+0x120/0x360 kernel/locking/lockdep.c:5868 percpu_down_read_internal include/linux/percpu-rwsem.h:53 [inline] percpu_down_read_freezable include/linux/percpu-rwsem.h:83 [inline] __sb_start_write include/linux/fs.h:1798 [inline] sb_start_intwrite include/linux/fs.h:1981 [inline] ocfs2_start_trans+0x26b/0x6d0 fs/ocfs2/journal.c:370 ocfs2_setattr+0x969/0x1b40 fs/ocfs2/file.c:1263 notify_change+0xb31/0xe60 fs/attr.c:552 ovl_do_notify_change fs/overlayfs/overlayfs.h:203 [inline] ovl_workdir_create+0x722/0x8b0 fs/overlayfs/super.c:364 ovl_make_workdir fs/overlayfs/super.c:669 [inline] ovl_get_workdir+0x32f/0x17c0 fs/overlayfs/super.c:827 ovl_fill_super+0x1365/0x35b0 fs/overlayfs/super.c:1406 vfs_get_super fs/super.c:1325 [inline] get_tree_nodev+0xbb/0x150 fs/super.c:1344 vfs_get_tree+0x92/0x2b0 fs/super.c:1815 do_new_mount+0x2a2/0x9e0 fs/namespace.c:3808 do_mount fs/namespace.c:4136 [inline] __do_sys_mount fs/namespace.c:4347 [inline] __se_sys_mount+0x317/0x410 fs/namespace.c:4324 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f83c43debe9 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f83c2646038 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007f83c4615fa0 RCX: 00007f83c43debe9 RDX: 0000200000000080 RSI: 00002000000000c0 RDI: 0000000000000000 RBP: 00007f83c4461e19 R08: 0000200000000a00 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f83c4616038 R14: 00007f83c4615fa0 R15: 00007ffed1931a68 overlayfs: upper fs does not support tmpfile. overlayfs: upper fs does not support RENAME_WHITEOUT. overlayfs: upper fs missing required features. ocfs2: Unmounting device (7,6) on (node local)